From the last chapter, you saw that VY joined ABY, AY, and MY in a revolt against the Atomo Army. After the decision was made, large flaming dragons appeared out of the cones of the volcanoes. AY's energy is about to burst if the weak bond was broken. When AY was attacked, the energy unleashed within.
ABY: What's going on?
AY: Stay back! The change is happening!
AY goes through a large change. The wings turn black, as well as the skin on the bottom side. Her blue eyes turn a fluorescent neon blue, as well as the little spikes on the back of her head. To make the change short, AY has turned to Dark AY. After the change, a large circle of energy with the edge of a blade shoots out like a growing sphere, destroying everything in its way. ABY and AY take cover, but the dragons' heads are cleanly cut off. After the energy burst, Dark AY calms down. The temporary change reverses and Dark AY is back to AY.
ABY: Did you just turn into something very ferocious that isn't yourself?
AY: Well, I was made with this ability for defense. However, the energy constantly builds up and eventually erupts. I can keep the new change for as long as I want, but it takes more energy to keep it up. When the change stops, I have to wait until it recharges.
ABY: How long does it take to rebuild this burst of energy?
AY: It greatly varies, but the main thing that decides the factor or not is if the area is in darkness or light. Since I'm the angel of what is known as, "The Two Yoshies of Light and Darkness", I rebuild my energy in light.
ABY: So what's the other yoshi's name?
AY: He's known as Devil Yoshi, or DY. It's known that if we fuse together in some magical way, we make a gray yoshi that's known to destroy any kind of evil. The thing is... we hate each other.
ABY: So the only way to fuse together in my guess is to form a friendly bond.
AY: That could be true, but I'm not sure.
ABY looks around.
ABY: Do you know where MY went?
AY: I have no clue. I thought he was with us.
ABY: He must be looking for yoshies to revolt against the Atomo Army.
AY: That could be true. Do you think DY could be on this world?
ABY: Who knows? He might be, he might not.
AY: Ok, let's get back on schedule. We need to find more yoshies to go against the Atomo Army. Let's go!
ABY and AY take off, but where's MY?...